<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <!-- autocomplete:on、off -->
    <!-- 会记住之前提交的记录，利于快速填写 -->
    <!-- <form action="demo_form.asp" method="get" autocomplete="on">
    <input type="text" list="wen" autocomplete="on" />
    <datalist id="wen">
      <option value="A">A</option>
      <option value="B">B</option>
      <option value="C">C</option>
      <option value="D">D</option>
      <option value="E">E</option>
      <option value="F">F</option>
      <option value="G">G</option>
    </datalist>
    <input type="submit"></input>
</form> -->

<!-- autofocus -->
<!-- 规定输入字段在页面加载时是否获得焦点 -->
<input type="text"  autofocus>
  </body>
</html>
